Elastic-fluid turbine.



PATENTED JAN. 15, 1907. C. W. BAKE.

. ELASTIC FLUID TURBINE.

APPLICATION FILED NOV. 29, 1905.

6 SHEETS-SHEET l WITNESSES:

No. 841,486. PATENTED JAN. 15, 1907.

0. W. DAKB.

ELASTIC. FLUID TURBINE.

APPLIUATION PILBDQNOV. 29. 1905.

6 SHEETS-SHEET 2.

PATENTED IAN. 15,1907. 0. W. DAKB.

ELASTIC FLUID TURBINE.

APPLICATION FILED NOV. 29, 1905.

6 SHEETS-SHEET a.

lT/VESSES:

awn/K ArmR/vErf No. 841,486. PATENTED JAN. 15

0. W. DAKE. ELASTIC FLUID TURBINE. APPLICATION FILED NOV. 29, 1905.

6 SHEETS-SHEET 4.

No. 841,486. PATENTED JAN. 15, 1607. 0. W. DAKE. ELASTIC FLUID TURBINE.

APPLICATION FILED NOV. 29, 1905.

6 SHBETS SHEET 5.

ATTORNEY? PATENTED JAN. 15, 1907 C. W. DAKB.

ELASTIC FLUID TURBINE. I APPLICATION FILED NOV. 29, 1905.

s SHEETSSHEET av g WITNESSES:

Arrow/Hg UNITE s TA'rns PATENT 'rrron.

CHARLES W. DAKmhhANn RAPIDS, MICHIGAN. ELASTlC-FLUID "ruaBm-E.

Specification of LettersPatent.

Patented Jan. 15. 1907.

Application filed November 29,1905. Serial No. 289,658.

This invention relatesto improvements inelastic-fluidturbines.

The objects of this invention are, first, to simplify the constructionof such turbines generally; second, to provide an improved constructionof turbine-wheel; third, to provide an improved construction of bucketsin a turbine-wheel; fourth, to provide improved nozzles anddelivery-passages. in an elasticfluid turbine; fifth, to provide animproved arrangement in combination of deliveryassages and buckets foran elastic-'fluid-tur ine wheel? and, sixth, to provide an improvedarrangement of the passages, nozzles, and exhaust-chambers in anelastic-fluid turbine.

. Further objects and objects relating to the details of constructionwill definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification. The invention is clearly edout inthe claims.

A structure embodying the features of my invention is clearly ilustrated in the accompanying drawings, forming a part of thisspecification, in wk ich Figure 1 is avertical sectional elevation viewtaken on a line corresponding to hne B B of Fig. 4, showing theinvention as adapted to smaller sizes of turbine-engines. Fig. 2 is anenlarged detail sectional view taken on a line corresponding to line B Bof Fig. 4, showing defined, and pointthe case, cover, wheel, bucke' l,nozzles, an

guide-passage blocks in p'osi.1on, the same ein slight y modified, inthaLthe channel 4 for istributing the fluid to the several nozzles is inthe casing 1 in place Pin the casingcover 2. Fig. 3 is an enlargerdetail View of one of the nozzle and guide passage blocks 4 shown inFig. 2, the view being taken from the casing side and showing therelation of this block to the turbine wheel, buckets, and cover,portions of which 1parts are illustrated. 4 is a detail side e evationview of the casing with the turbine-wheel and nozzle and guide passageblocks in position. Fig. 5 is an enlarged detail sectional view of aslight modification ofthe nozzle and guide passage block as arrangedbetween the op ositelyfacing U-shaped buckets, the nozz e beingindicated by dotted lines, the section being transverse to the rows ofbuckets and showing the first row of buckets, the first guidepassage,the second row of buckets, the second guide-passage, in dotted lines,and exit- ,p assages, the figure being taken on line 2 z of 'g. 3. Fig.6 is an enlarged cross-sectional view of the nozzle and guide passageblock in place, as in Fig. 5., showing the nozzle in dotted lines, thebuckets, the first guideassage, and second guide-passage, the same eingtaken on line t t of Fi s. 3, 9, 10, and 11. Fig. 7. is an enlargeddetail cross-sectional view of one of the nozzle and guide passageblocks, showing the admissionnozzle, the first row of Us.1aped buckets,the first guide-passage, and the second row of U-shaped buckets, takenon the irregular line 9 g of Fig. 3. Fig. 8 is a detail viewof a sectionof the Wheel, showing a portion of one line of the oppositely-facingbuckets, the

same being an interior view of a portion of one-half of the wheellooking in the direction of the axis of the wheel and into the buckets.Fig. 9 is an enlarged sectional View of one of the nozzle and guide online a: m of Fig. 6, nozzle and guide passage blocks and the U-shapedbuckets at and guide passage block. Fig. 10 is an enl'argedsectionatview of the said nozzle and guide passage block, taken on line8 s of Fig. 6, showing how such nozzles register with the U-shapedbuckets at each side, Fig. 11 is an enlarged detail sectional view ofthe nozzle and guide passage block BJKlVllGGl, taken on a linecorresponding to line a a of Fig. 6, showing the second or returnguide-passages and mouth of the admission-nozzle, the wheel appearing infull lines. Fi 12 is an enlarged detail sectional viev or the nozzle andguide passage block, taken y y of Fig. 8, showing the admission-nozzleand portions of the guide-passages, the .dotted lines showing thedirection thereof. jg. 13 is an enlarged detail transverse sectionalview of a modification of the guide-passage each side of said nozzle onirregular line block 4, in which the annular partwhich enters thedepressions in the buckets is omitted, and the faces of the opposedbuckets are made flat and parallel, the fluid-passage also beingsimplified; and F i detail sectional view of t e nozzle and guide 14 isan enlarged passage block 4, taken on irregular line 757C of Fig. 5,-theadmissiomnozzle and the exit-passage 18 being indicated by dotted lines,also showing a small block 4 and the nozzle-passa 'e 13. p

in the drawings similar numerals of refer- 'ence refer to similar partsthroughout the v are through-the upper part of the block several views.

Referring to the numbered parts of the drawings, the turbine-casing 1 isprovided with a suitable cover 2, which is supported on a suitable baseby flange 24. Within the cover 2 is a chamber 23, which serves toembrace the buckets and the moving parts and to insulate them from theexterior by a chamber of live steam.

3 3' are the two halves of the turbine wheel, the same being ofdisk-like formation, which are secured to the shaft 5 by being bolted orclamped to a flange (Ythereon. This shaft is supported in suitablebearings 7 7, carried by brackets 7 Tf, secured to the casing 1 andcasingcover 2, respectively. One of these hearings is made adjustablelongitudinally by screws 7 for the purpose of adjusting the position ofthe turbine-wheel in its relation to the nozzle and guide passages. Atthe periphery of the turbine-wheel.oppositely-fining semicircular rowsof buckets 14 and 16 are arranged on opposite halves thereof. Thenozzle-and guide passage blocks 4 are arranged at intervals betweenthese oppositely-lacing rows of buckets, their posi} tion and relationaround the circle of the wheelbeiug clearly indicated in Fig. 4 andtheir general cross-sectional arrangement definitely appearing in thepreferred construction in Figs. 1, 2, 5, 6, and 7, and in a modifiedform in Fig. 1-3. Sectional views loi'igitudinal of thebloeks and.series of buckets appear in Figs. 9, 1t), 11, and 12, and an enlm'geddetail-of the block appears in Fig. 3, from which many of the sectionalviews are obtained. There are six of these blocks in my preferredconstruction. They are retained'iuthe casing 1 by means of" screws 4"Fluid-passages 10 are in the casing 1 in the preferred construction andconnect to the passa cs 11, which passages 11 connect to the eastic-fluid chamber or" passage 11. This passage 11 leads to the severalnozzles corresponding to the six different nozzleblocks arranged Withinthe casing, the passage 11 being preferably in the oasing-cover 2. Apassage 12 leads from the chamber 11 to each admission-nozzle 13 in therespective blocks 4. The first row of buckets 14, as before remarked,are U-shaped and are cut at an angle by a suitable rotary cutteror'rnill ing-tool to receive the annular discharge from the nozzles. Theguide-passage :15 clearly appears in Figs. 1 and 10 and is indicatedby'dotted lines in Fig. '9,through" the block to conduct the fluid fromthe first row of buckets" 14to the second row of buckets.

sunse 16 on the opposite side or' the Wheel, this passage 15 beingcurved to substantially reverse the direction or flow of the elasticfluid so that it will. strike at the roper angle into the inner-side'sof .the hue ets 16 and pass toward the peri hery of the Wheel fordriving the wheel on t at side. Guide-passages f17 4 or :passing'thefluid from the buckets 16 to the tops of the buckets 14, where it isdelivered just in advance of the admission-non zle. 13, and from thencethe elastic 'fiuid makes another circuit of the buckets the same as whenstarting from the admission .nozzle, which is here re eated but once,but

Which could be repeats indefinitely.

Exit-passages 18 are in each block and arran ed to connect with thesecond row of to the exhaust-channel 19, which entends entirely aroundthe casing 1 and connects, by suitable passages 20, to a passage 22through the base 9, whence it may connect to a suitable condenser, ifdesired.

In Fig. 2 the structure of Fig. 1 is modificd, showing how the nozzlesma lead from the casing side, when of course t :echamber 1 1 andsupply-nozzles would be in the casing, as distinguis red fromthecasing-cover.

In Fig. 13 the arrangement of. the nozzle and guide passage block 4 issomewhatdifferent from that in the other figures, and its the bucketsare shaped to correspond thereto.

Having thus described and indicated the relation. of the various partsof my improved turbine, I will now indicate the oacration of the same. i

used.

The steam. enters'the passage 10 and is con veyed by the passage 11 tothe chan'rber 11, where it is distributed to the several small passages12, which lead to the admissionnozzles 13 foneach block 4, which lead,pref erably at an angle of twent T degrees, to the plane of the wheelinto the st row of buckets 14 14, being the outer edge of such bucketstoward the eriphery of the wheel. The steam delivered through thesenozzles delivers an impact force on entering and a re actionary forceon'leaving the buckets 14 at an angle to the direction of thedeliverynozzles, whence it passes into the first curved guide-passage15, where the direction is reversed, the same assing therefrom. into thesecond row of hue ets 16, set at the opposite side of the guide-passageand arran ed exactly symmetrical and opposite to t e first row ofbuckets 14. The steam then passes through the buckets 16, imparts animpact force on entering the inner sides of such buckets and areactionary force on leaving the outer sides towardthe periphery. Fromback opposite sides are made flat and parallel and The elastic fluidwhic 1 1 will refer to will be steam, although of course C(Jlll".pressed air or other elastic fluid might be 'buc ets 16, the steampassing thcrethrough lan simply-passage 1] in the casing-rmer; a

the outer sides 'of the buckets 16 the steam flows into another passage17 through the block 4.1" This assage receiving the fluid from the outersi e of the buckets 16, changes itsdirection, as clearly a pearsin thesec-- tional view in Fig. 11, an passes just in advanee of theinlet-nozzles and delivers the steam against the first roiv of buckets1 1. The steamthen passes through another of the guide-passages 15, andfrom this guideassage into the rows of'buckets 16, as beore, just inadvance of its first entry, and from these buckets 16 it flows to theouter side and into the exit-passages 1S, thence to the exhaust-chamber19, where the 813631}! eventually passes through the passage 20 into thebase 9. In the modification appearing in Fig. 2 the fluid passes in,,asabove indicated, into the passage 10 and thence directly into thefluidchamber 11, thence through'a short passage 12 into a. passage 13 tothe opposite side of the nozzle and guide passage block 4, where itconnects to the channel leading to the admission-nozzle, thepassage 13and ad1nission-nozzle 13 being partially formed by a plates. From thisit will be seen that the steam is compounded and expands in its progressaround the wheel, being used. as many times as may be desired.

.1 desire to remark that these bucket-s are preferably electroplated with copper or nickel or other metal which is.not liable to tarnish andwhich may be burnished and present a very smooth surface to the actionof the steam. ghrom this description the relation of the parts of myimproved turbine is clear. "I de sire to remark that the same canboconsiderably varied in its structural details Without departing frommy invention.

' Having thus described my invention, what 1 claim new, and desire tosecure by Letters Patent, is

1. In an elastic-fluid turbine, the c0n1bination of the casing 1,supported by a suitable flange 24 on a base 22, having an annularexhaust-chamber connected. by passages 19, 2 and 22 with said base: acasing-cover 2 suitably joined to .the said casing; an inlet-passage H);a passage 11 connecting to an annu shaft 5 with a suitable flangeaxially arranged in said casing and supported in suitable bearngssupported by ifhracket 7 to the said casing and casing-cover with meansfor longiludinally adjusting said shaft; a flange on the shaft; aturbine-wheel consisting of two halves bolted to the said flange andbolted to each other and having oppositelyfaced rows of curved bucketsformed to be actuated by the impact of a slcannjcl and the reactiontherefrom: uozzlc and guide passage blocks 4 securciil to the casing 1,and 0011- l taining an inlet-passage 12 leading to a 1102- l 2. In aturbine-engine, the combination of oppositely-faced curved rows ofbuckets curving in the-same direction to receive impulse from the impactof a jet of steam and from. the reaction thereof; an intermediate nozzleand guiding passage block provided .With a nozzle leading to theouterend of one row of said buckets; recurved guide-passages connecting theinner sides of the opposite rows of said buckets; and recurvedguidepassage connecting the outer sides of the said opposite rows ofbuckets; suitable exhaustpassages leading therefrom, specified.

3. In an elastic-fluid turbine-engine, the combination of a casing 1with the cover 2;

all coacting as an annular inlet-passage 11 arranged within said casingand cover, connecting to the delivery-nozzles 13 through the passages 123 an; annular exhaust-chamber 19 on the o positeside of said casing; ashaft 5 arranged t irough the said casing with longitudinally-adjustablebearings, with'a water seal at the sides of thecasing ior embracing thesaid shaft; 5. flange 6 on the said shaft; a turbine-wheel consisting ofdisks 3 3 secured to the opposite sides of said flange, and having opposit'ely faced and curved buckets 14 and 16 on the two sides thereof,with annular grooves in their faces, each bucket being of the recurvedtype, whereby it receives an impact from a jet of fluid at one side andis reacted upon by the exit of the fluid at the'opposite side;fluid-chainlwrs embracing the sides of said wheel, to insure evpndistribution of temperature and consequent even cxpansioh, nozzle andguide passage blocks 4 sccuredto the said casing and arranged betweenthe oppositelyd'accd buckets 14 and 16 and containmg a nozzle-passage 13delivering to the buckets 14; a recurved "rude-passage 15 for conveyingsteam from time inner side of the buckets 1'4 to the inner side of thebucket-s 16; a guide-passage 17 deliveringfroln the outer side of thebucket-s 16 to the outer side of the buckets 14 whereby the elasticfluid circulates and delivers a series of impacts to the buckets of theturbine-wheeis; and an exhnust-passage 18 leading froln'the outer sideof the bucket 16 to the exhaust-chamber in the casing, the same beingarranged inadvance of the inlcl-passagr 13 sulliciently' to permit oneor more circulations through the uckets of the fluid before it exhaustsfrom and curved buckets 14 and .16 on the two sides thereof, withannular grooves in their 1 faces, each bucket being of the recurvecitype, whereby it receives an impact {mm a jet of fluid at one sideand'is reacted upon. by the exit of the fluid at the opposite side;fluidchambers embracing the sides of said wheel; z'oto insurejevcn'distribution of temperature and cp'nsequent even expansion; nozzleand guide blocks secured to the said casing and arranged between theoppositelyfaced buckets 14 and 16 and containing a nozzle-passage 1 3delivering to the buckets -14; arecurvcd guide-passage 15 for conveyingsteam from the innenside of the buckets 14 to the inner side of thebuckets 16, a guidepassage 17 delivering from the outer side of thebuckets 16 tothe outer side of the buckets 14, whereby the elastic fluidcirculates and delivers a series of impacts to the buckets of theturbineevheel; and an exl1aust-passage 18 leading from the outer side ofthe bucket 16 to theeXhaust-chamber in the cas ing, the same beingarranged in advance of the inlet-pa$sage 13 sufficiently to permit oneor more circulations through the buckets of the fluid before it exhaustsfrom the engine, all coactingfor the ur osespecificd.

5. In an elastic-- lui turbine-engine, the combination of a casing 1with the cover 2; an annular inlet-passage 11 arranged within saidcasing and cover, connecting to the delivery-nozzles 13 through thepassages 12; an annular exhaust-chamber 19 on the opposite side of saidcasing; a shaft arranged throu 11 said casing withlongitudinally-adjustab e bearings, and having oppositely faced andcurved buckets 14 and16 on the two sides thereof, with annular groovesin their faces, each bucket being of the recurved type, whereby itreceives an impact from a jet of fluid atone side and is reacted upon bythe exit of the fluid at the opposite side; fluid chambers embracing thesides of said wheel, to insure even distribution of temperature andconsequent even expansion; nozzle and guide passage blocks 4 secured tothe said casing and arranged between the oppositely faced buckets 14 and16 and containing a nozzle-passage 13 delivering tothe buckets 14; arecurved guide-passage 15 for conveying steam from the inner side of thebuckets 65 14 to the inner side of the buckets 1% a haust-passagc 18leading from the outer side of the bucket 16 to theexhaust-cham.benirrthe casing, the same being arranged inside. vance ofthe inlet-passage 1.3-sutflcientlyto permit one or more circulationsthrough'the,

buckets of the fluid before it exhausts from the engine, all coactingfor the purpose specic lied.

an annular inlet pa-ssage 11 arranged within said casing and cover,connecting to the de- 6. In an elastic-Hind turbine-engine, the Ycombination vofa casing 1 with the 601762 2;

livery-nozzles; an annular: exhaust-chamber 19 on the opposite side ofsaid casing; a shaft 5 arranged through the saidcasing withlongitudinally-adjustable bearings, and having oppositely faced and.curved buckets 14 and 16 on the two sides thereof, with-annular groovesin their faces, each-bucketbeing of the recurved type, wherebyitrece-ives an: 1111: I

pact from a jet of fluid at-oneside and is re acted upon bythe exit ofthe fluidat the o; posite side; fluid-chambers embracing the sides ofsaid wheel, to insure even distribution of temperature and consequenteven expansion; nozzle and guide passage blocks 4 see" 'cured to thesaid casing and arranged between the oppositely-faced buckets 14 and 16and containing a nozzle-passage 13v delivering to the buckets 1.4 arecurved guide pas- V sage 15 for. conveying steam from the finer sideof thebuckets 14 to the inner side or the buckets 16; a guide-passage 17delivering from the outer side of the buckets 16 to the outer side ofthe buckets 14 whercb the elastic fluid circulates and delivers a seriesof impacts to the buckets of the turbine wheel: and an exhaust passage18 ieading from the outer side of the'bucket 16 to the exhaustchamber inthe casing, the same being arranged inadvance of the inlet-passage l3sufficiently to permit one or more circulations through the buckets ofthe fluid before it exhausts from the engine, all coacting for thepurpose specified.

7. In an elastic-fluid .turbine engine, the

combination of a casing l with the cover 2; an annular inletepassage 11arrau-ged-witlun said casing and cover, connei'zting tothedclivery-nozzles 13 through the passages 12;

an annular exhaust-chamber 19-on-the oppo' site side .of said casing;- ashaft. 5 arranged through the said casing with longitudinallyadjustablebearings, with a water seal. at the sides of the casing for embracingthe said shaft, and having oppositely faced and curved buckets 14 and16011 the two sides thermf, with annular grooves in their faces, eachbucket being efthe recurved type, whereby it receives an inipact froni ajet of fluid atone side and is reacted upon by the exit of the fluid atthe opposite side; nozzle and guide passage blocks 4 secured to the saidcasing and arranged between the oppositely-faced buckets 14 and 16 andcontaining a nozzle-passage 13 delivering to the buckets 14; a recurvedguidepassage 15 conveying steam from the inner side of the buckets 14 tothe inner side of the buckets 16 a guide-passage 17 delivering from theouter side of the buckets 16 to the outerside of the buckets 14 wherebythe elastic fluid circulates and delivers a series of impacts to thebuckets ofthe turbineavheel; and an exhaust-passage 18 leading from theouter side of the bucket 16 to the exhaustchamber in the casing, thesame being arranged in advance of the inlet-passage 13 sufliciently topermit one or more circulations through the buckets of the fluid beforeit exhausts from the engine, all coacting for the purpose specified.

8. In an elastic-fluid turbine-engine, the combination of a casing 1with the cover 2; an annular inlet-passage 11 arranged within saidcasing and cover, connecting to the dey livery-nozzles; an annularexhaust-chamber 19 on the opposite side of said casing a shaft.

5 arranged through said casing with'longitudinally hdjustable bearings,with a water seal at the sides of the casing for embracing the saidshaft, and having oppositely faced and curved buckets 14 and 16 on thetwo sides thereof, with annular groovesin their faces, each bucket beingof the recurved type, whereby it receives an impact from a jet of fluidat one side and is reacted upon by the exit of the fluid at the oppositeside; nozzle and guide passage blocks 4 secured to the said casing andarranged between the oppositely-faced buckets 14 and 16 and containing anozzle-passage 13 delivering to the buckets 14; a recurved de-passage 15for conveying steam from ti inner side of the buckets 14 to the innerside of the buckets 16; a guide-passage 17 delivering from the outerside of the buckets 16 to the outer side .of the buckets 14 whereby theelastic fluid circulates and delivers a series of impacts to the bucketsof the turbine-wheel; and an exhaust-chamber in the casing, the samebeing arran ed in advance of. the inlet-passage 13 sufiiciently topermit one. or more circulations through the buckets of the fluid beforeit exhausts from the engine, all coacting for the purpose s ecified.

9. In an elastic-i uid turbine-engine, the

combination of a casing 1 with the cover 2-;

an annular inlet-passage l1 arranged-Within said casing and cover,connecting to the delivery-nozzfos; an annular exhaust-chamber 19 on theop osite side of said cas1ng; a shaft 5 arranged t ough the said casingwith longitudinally-adjustable bearings, and havmg pposit ly faced andcurved buckets 14 and 16 on the two sides thereof, with annular groovesin their faces, each bucket being of the recurved type, whereby itreceives an impact from a jet of fluid at one side and is reacted uponby the exit of the fluid at the opposite side nozzle and guide passageblocks 4 secured to the said casing and arranged between theoppositely-faced buckets 14 and 16 and containing a nozzle-passage 13delivering to the buckets 14; a recurved guide-passage 15 for conveyingsteam from the inner side of the buckets 14 to the inner side of thebuckets 16; a guide-passage 17 delivering from the .outerside of thebuckets16 to the outer side of the buckets 14 whereby the elastic fluidcirculates and delivers a series of impacts to the buckets of theturbine-Wheel; and an exh austpassage 18 leading from the outer side ofthe bucket 16 t0 the exhaust-chamber in the casing, the same beingarranged in advance of the inlet-passage 13 suiflciently to permit oneor more circulations through the buckets of the fluid before it exhaustsfrom the engine,

all coacting for the purpose specified.

10. In an elastic-fluid turbine-enginathe combination of a casing 1 withthe cover 2; an annular inlet-passage 11 arranged within said casing andcover, connecting to the delivery-nozzles 13 through the passages 12; anannular exhaust-chamber 19 on the opposite side-of said casing; a-shaft5 arranged through the said casing with longitudinally-adjustablebearings, with a water seal at the sides of the casing for embracing thesaid shaft, and having oppositely faced and-curved buckets 14 and 16 onthe two sides-thereof, with annular grooves in their "faces, each toobucket being of the recurved type, whereby it receivesan impact fromajet of fluidcat one side and is reacted upon by the exit of-the. fluidat the opposite side fluid-chambers embracing thesldes ofsaid wheel, toinsure even distribution of temperature and consequent even expansionnozzle and-guide passage blocks 4 secured to the said-casing and 'ar-'ranged between the oppositely-facedbuckets 14 and 16 and containing anozzle-passage .13 delivering to the buckets 14; a reeurvedguide-passage 15 for conveying steam from the inner side of the buckets14 tov the. inner side of the buckets 16 a guide-passage 17 deliveringfrom the outer side of the buckets 16, to the outer side of the buckets14 whereby the elastic fluid circulates and delivers a series of impactsto the buckets of the turbmewheel; and .an exhaust-passage 18 leadingfrom the outer side of the bucket 16 to the exhaust-chamber in thecasing, thesame being arranged in advance of the inlet-passage 13,all-coactin for the purpose specified.-

11 In an e astic-fluld turbine-engine, the

combination of a casing 1 with the cover 2;

an annular inlet-passage llarranged within said casingand cover,connecting to the delivery-nozzles; an annular exhaust-chamber 19 on theopposite side of said casing; a shaft I arranged through the said casingwith lom gitudinally-adjustablebearings, with a vvater seal at the sidesof the casing for embracing the said shaft, and having oppositely facedand-curved buckets 14 and 16011 the two sides thereof, with annulargrooves in their faces, each bucket being of, the re curved type,whereby it receives an impact from a jet of fluid at one side and isreacted upon by the exit of the fluid at the opposite sidefluid-chambers embracing the sides of said Wheel, to insure evendistribution of temperature and consequent even expansion; nozzle andguide passage blocks 4 secured to the said casing and arranged betweenthe oppositely-faced buckets 14 and 16 and containing a'nozzle-passage13 delivering to thebuckets 14; a recurved guidepassage'lfi forconveying steam fromthe inner si e of the buckets 14 to the inner sideof the buckets'16 a guide-passage 17 delivering" roin the outer side ofthe buckets 16 to the I outer side of the buckets 14 whereby the anannular inlet-passage 11 arranged within said casing and cover,connecting to the delivery-nozzles 13 through the passages '12 anannular exhaust-chamber 19 on the-opposite side of said. casing; a shaft5 arran ed. through the said casing With' longitudinal adjustablebearings, and having opposite y faced and curved buckets 14 and 16 onthe two sides thereof, with annular grooves in their faces, each bucketbeing (if the recurved type, whereby it receives an impact from a jet offluid at one side and isreacted upon by the exit of the fluid at the oposite side; fluid-chambers embracing the sides 01'. said Wheel, toinsure even distribution of temperature and conseqluent expansion;

nozzle and guide passage ocks 4 secured to the said casing and arrangedbetween the oppositely-faced buckets '14 and 16 and con' taming anozzlepassage 13 delivering to the bukbts 14 a recurved guide-passage 15for conveying steam from the inner side of the buckets 14 to the innerside of the buckets 16; a guide pasSage 17 delivering from the outerside of the buckets 16 to theouter side of the buckets 14 Wherebyftheelastic fluid circulatesand delivers a series of impacts to thebucketsof the-turbine-W'heel; and an ex haust-passage 18 leading from the outerside of the bucket 16 to the exhaust chamber in "the casing, the samebeing arranged in ad- I senses:

the purpose specified e 13; In an elastic-fluid turbine-engine, thecombination of a casing 1 with the cover 2; an anular iulet-passage 11arranged Within said casing and cover, connecting to. thedelivery-nozzles; an annular exhaust-chamber 19 on the opposite sidc'ofsaid casing; a shaft nozzle.and guide passage blocks 4, secured'to thesaid casing and arranged between'the oppositely-faced buckets 14 and 16and com buckets ,14; a recurved guide-passage 15 Eor conveying steamfrom the inner side of the buckets 14 to the inner side of the buckets16;

si e of the buckets 16 to the outerv side of the buckets '14 whereby theelastic fluid circulates and delivers a series of impacts to the bucketsof the turbine-Wheel; and an exhaustpass'age 18 leading from the outerside ot'thc ucket 16 to the eXhaustmhamber-in the casthe inlet-passage'13, all coacting for the purposespecflied. i 14., In an elastic-fluidturbine-engine, the combination of a casing 1 with the cover 2; anannular inlet-passage 11 arranged within saidcasing and cover,cdnnecting to the delivery-nozzles 13 through the passages 12 an side-ofsaid casing; a shaft 5 arranged through bearings, with a water seal atthe sides qf the 'ing oppositely-faced and curved buckets 14 and '16onthe two sides thereo'f, with annular grooves in their faces, eachbucket being of the recurved typawhere'by it receives an impact'irom ajet of fluid at one side and is reacted upon by the exit of the fluid atthe opposite side; nozzle'and guide passage blocks 4 secured to "thesaid casing and arranged between the oppositely-faced buckets '14 and 16andcontaining DOifilG-1PQSSB 'B 13 delivering to the-buckets 14; arecurred the buckets 14 to the inner 'sideol the'buok ets 16; aguide-passe e fiddliveringiromthe outer side of thebuc e'tslfito theouterside of the buckets '14 whereby the elastic fluid circulates anddelivers a series of im acts to the *bfihkets cf the turbine-wheel; anan exvance of the inlet-passage 13 all coacting for 5 arranged throughthe said casing With 1on ing, the same being arranged in advance ofcasingfor embracing the said shaft, and havperature and consequent evenexpansion;

taining a nozzle-passage 13'delivering to the a. uidepassage 17delivering from the outer annularekhaust-chamber 19 on the opposite thesaid casing with longitudinally-adjustable guide-passage. 15 f0rconveying steam-from the inner side of of the bucket 16 to theexhaust-chamber in the casing, the same being arranged in advance of theinlet-passage 13, all coacting for the purpose specified.

15. In an elastic-fluid turbine-engine, the combination of a casing 1with the .cover 2; an annular inlet-passage 11 arranged within saidcasing and cover, connecting to the delivery-nozzles; an annularexhaust-chamber 19 on the opposite side of said casing; a shaft 5arranged through the said casing with longitudinally-adjustablebearings, with a water seal at the sides of the casing for embracing thesaid shaft, and having oppositely faced and curved buckets 14 andv 16 onthe two sides thereof, with annular grooves in their faces, each bucketbeing of the recurved type, whereby it receives an impact from a jet offluid at one side; and is reacted upon by the exit of the fluid at theopposite side ,'-nozzle and guide passage blocks4 secured to the saidcasing and arranged between the oppositely-facedbuckets 14 and 16 andcontaining a nozzle-passage 13 delivering to the buckets 14; a recurvedguide-passa e 15 for conveying steam from the inner si e of the buckets.14 to the inner side of the buckets 16; a guide-passage 17 deliveringfrom the outer side of the buckets 16 to the outer i side of the buckets14- whereby the elastic fluid circulates and delivers a series of in1pacts to-the buckets of the turbine-wheel; and an exhaust-passage 18leading from the outer side of the bucket 16to the exhaust chamber inthe casin the samebeing' arranged in advance of t e inietlpassage 13,ail coacting forv the pu ose sped ed 16." In an elasticuidturbine-engine, the combinationofacasing 1 with the cover :3; anannularinlet-passage 11 arranged within saidcasing:and'cover,Tconneeting to the delivery-nozzles; an annularexhaust-chamber 19 ,on the opposite-side of said casing; ashal't '5arranged through-the said casing with .1011- gitudinallyeadjustablebearings, and havin -oppositelyifaced and. curved buckets 14 an 16 onthe two sides thereof, with annular grooves in theirfaces, each bucketbeing of the recurved type, whereby-it receives an impact from a jet.-offluid at one side and is reacted upon by the exit of the fluid at thegp'posite side; nozzle and guide passage ocks 4,,secured to the saidcasing and ar-.

ranged between the oppositely-faced bucket,s -14' and 16 and containingnozzle-passage 13 delivering to the buckets 14; a recurvedguide-passage-15 for conveying steam from the inner side of the buckets14 to the inner side of the buckets 16 a guideassage 17 delivering-fromthe outer side 0 the buckets 16 to'the outer side of the buckets 14whereby the elastic fluid circulates and delivers a series'of im acts tothe buckets of the turbine-wheel; ,an an'exhaust-passage 18 leading fromthe outer side of the bucket 16 casin s having suitable flanges; aturbine- Wheel having disks 3 3 secured to the sides of said flange, andhaving oppositely faced and curved buckets 14 and 16, on the two halvesthereof, with circular grooves in the face,- each bucket being of therecurved type, whereby it receives an impact from a jet 0f fluid at oneside, and is reacted upon by the exit of fluid at the o posite side,suitable exhaust-passages lea ing therefrom, for the purpose specified.

18. In aturbine-engine, the combination with a suitable casing with ashaft arranged therethrough of oppositely-faced U-sh'aped buckets 14 and16, of. the recurvedtype,

w-hereby the jet imparts an impulse and a further impulse is imparted-bythe reaction of the fluid; a guide-block arranged between .theoppositely-faced buckets, having nozzlepassages leading thereto andrecurved guidepassages for passing the steam from the buckets of oneside to the opposite side, and vice versa; and an exhausnpassage inadvance of the nozzle-passage to secure the circulation of the steamthrough the buckets i I until its expansive force is utilized, coactingas specified. 19.. Ina turbine-engine, the combinationwith a suitablecasing with a shaft arranged therethrou'ih of oppositely-faced bucketsl4 and 16 of t e recurved. type, whereby the jet imparts an impulse anda further impulse is imparted. by the. reaction of the fluid aguide-block arranged between the oppo- SiliGlYrfflCGd buckets, havingnozzle-passages leading thereto and recurved.guide-passages for passingthe steam from the buckets of one side to the opposite side, and viceversa; f and an-exhaust-passage in advance of the nozzle passagetosecure the circulation of the steam through the buckets .until itsexpansive force 18 utilized, coactingas specified.

20. In a turbine-engine, "the combination with a suitable casing with ashaft arranged therethrough of oppositely-faced U-shaped buckets 14 and16 of the recurved type, whereby the jet imparts an impulse and afurther impulse is im arted by the reaction of the fluid; a guideb lockarranged between the oppositely-faced buckets, having nozzlepassagesleadingthereto and recurved guidepassages for passing the steam from thebuckets of one side to the opposite side, and

vice versa; and an exhaust-passage in advance of the nozzle-passage tosecure a circulation of the steam through the buckets, coacting asspecified.

21,.ln a turbine-engine, the combination with a row of U-shsped recurvedbuckets of sdniissionmozzles delivering to the outer periphery thereof;and guide-passages from the inner sides thei'eof the discharge-out1etsfront the buckets being at an angle to the diliidtiOfl of thedelivery-nozzles.

22. In an elastic-fluid turbine-engine, the combination of suitahlecasings; a shaft Within thecasings having suitable flanges, aiurbinefivheei having disks 3 3 secured to the sides of said flange; andhaving oppositely faced and curved buckets 14 and 16011 the two halvesthereof with circular grooves in the face, each bucket being of theiecurved fpe ivhel'ehy it receives an impact from a et 0t fiuidet ones1de, end is reacted upon. by the GXIE Of fluid. et 'the opposite side,suitable exhaust-i3sssages leading therefrom, a. part projecting betweenthe said buckets with recurved passages leading from the inner sideofone bucket to the inner side of the opposite bucket and dischargingfrom the outer side of said rec eivingbucket, to the outer side of theopposite bucket, securing a Oil'CilhltiOIiOf steam which permits itsexpansion, as 'speci- In Witness whereof I have hereunto set my hand andseal the presence of two Wit nesses.

' CHARLES W. BAKE: ii. 5.

Witnesses ADELAIDE I. ADAMS, OTIS A. EARL.

